ASTROSAT CZTI

Data Quality Report

Orbit 36640

Creation date: 2024-06-27T21:29:35.871041
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_049T04_9000005230_36640cztM0_level2.evt modeM0/AS1A11_049T04_9000005230_36640cztM0_level2_quad_clean.evt
Size (bytes)490,458,24088,079,040
Size467.7 MB 84.0 MB
Events in quadrant A2,573,003598,234
Events in quadrant B2,843,450597,510
Events in quadrant C2,933,159583,118
Events in quadrant D6,160,793533,259

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0107102
B0114971
C0116971
D0218581

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A507150.098600%
B5071460.907119%
C5071861.695918%
D507154010.648787%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7014 5072 0 0 0.00% 0.00%
B 7014 5072 18 18 0.26% 0.35%
C 7014 5072 67 67 0.96% 1.32%
D 7014 5072 560 560 7.98% 11.04%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 179485 1464.54 610 599 122.1
A 9 143 14478 113.63 610 599 122.1
A 15 223 13277 103.8 610 599 122.1
B 5 255 238838 2084.14 597 583 114.3
B 0 190 72271 627.09 597 583 114.3
B 5 172 36265 312.13 597 583 114.3
C 0 10 315076 2353.95 580 585 133.6
C 15 214 218743 1632.91 580 585 133.6
C 14 254 112475 837.49 580 585 133.6
D 12 235 3213196 23061.79 571 557 139.3
D 2 250 195453 1399.05 571 557 139.3
D 13 171 99487 710.16 571 557 139.3

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter